a big concern is that it could one day soon gain the technology to carry out some of those threats. >> yeah. and, matthew, diving in here, south korean officials today saying that cyber attacks we reported on yesterday, i think 32,000 computers damaged and servers, came from inside china. they've traced the ip back to there. but what does that mean? >> well, it doesn't mean that china was involved in this directly at least. in fact, it's heightened the suspicions that north korea was behind that cyber attack as well. not least because it's used chinese servers in the past to carry out very similar cyber attacks against south korea. in fact, the chinese government's reacted to this, they have not accepted any responsibility saying that hackers often use ip addresses from other countries to launch cyber attacks. they've also said they'll try and communicate -- sorry, you know, work with the international community to get to the bottom of this as well. and so, again, south korean investigators working hard to find out who's responsible for this. the fact it's a chinese ip address sheddin